here's randi kaye. >> reporter: mike rioux can't go to the grocery store without making a list even for just one item. he can't drive without gripping the steering wheel so hard his knuckles turn white. and he can't stand longer than 30 minutes because of severe back pain. this is mike rioux's life post-afghanistan. >> i need to discover who i am again. i'm not asking for help for the rest of my life. i want to feel like i matter. >> reporter: mike's wife maggie says her husband returned from war a shell of the man he once was. gone was the fun loving, free-spirited laid-back guy he used to be. war, she says, changed him. he still has ringing in the ears from explosions. he also suffers from vertigo, headaches and has terrible anxiety. we saw it firsthand during our interview. mike was so anxious he could hardly sit still. we met at mike rioux's mother's house near phoenix, arizona, where he, his wife and daughter have been living for the last year and a half. maggie and their daughter share a bedroom, and mike sleeps every night on the living room couch. what is it like for you at 51 t